chore: delete unused gapic.yaml configs for maps/routespreferred

Committer: @miraleung
PiperOrigin-RevId: 357946238

google/maps/routespreferred/v1/routespreferred_gapic.yaml

@@ -5,29 +5,3 @@ language_settings:
     package_name: com.google.maps.routespreferred.v1
   go:
     package_name: developers.google.com/maps/go/routespreferred/v1
-interfaces:
-- name: google.maps.routes.v1.RoutesPreferred
-  collections: []
-  retry_codes_def:
-  - name: idempotent
-    retry_codes:
-    - UNAVAILABLE
-  - name: non_idempotent
-    retry_codes: []
-  retry_params_def:
-  - name: default
-    initial_retry_delay_millis: 100
-    retry_delay_multiplier: 1.3
-    max_retry_delay_millis: 30000
-    initial_rpc_timeout_millis: 30000
-    rpc_timeout_multiplier: 1
-    max_rpc_timeout_millis: 30000
-    total_timeout_millis: 300000
-  methods:
-  - name: ComputeRoutes
-    required_fields:
-    - origin
-    - destination
-    retry_codes_name: idempotent
-    retry_params_name: default
-    timeout_millis: 30000